FR2697010B1 - Process for the treatment of soluble thorium compounds and new thorium phosphate thus obtained. - Google Patents

Process for the treatment of soluble thorium compounds and new thorium phosphate thus obtained.

Info

Publication number
FR2697010B1
FR2697010B1 FR9212463A FR9212463A FR2697010B1 FR 2697010 B1 FR2697010 B1 FR 2697010B1 FR 9212463 A FR9212463 A FR 9212463A FR 9212463 A FR9212463 A FR 9212463A FR 2697010 B1 FR2697010 B1 FR 2697010B1
Authority
FR
France
Prior art keywords
thorium
soluble
phosphate
precipitate
compounds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9212463A
Other languages
French (fr)
Other versions
FR2697010A1 (en
Inventor
Thierry Delloye
Jean-Luc Le Loarer
Alain Leveque
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rhodia Chimie SAS
Original Assignee
Rhone Poulenc Chimie SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rhone Poulenc Chimie SA filed Critical Rhone Poulenc Chimie SA
Priority to FR9212463A priority Critical patent/FR2697010B1/en
Priority to AU48944/93A priority patent/AU665458B2/en
Priority to EP93402544A priority patent/EP0594485B1/en
Priority to DE69307259T priority patent/DE69307259D1/en
Priority to AT93402544T priority patent/ATE147365T1/en
Priority to CA002108600A priority patent/CA2108600A1/en
Priority to US08/137,746 priority patent/US5403565A/en
Publication of FR2697010A1 publication Critical patent/FR2697010A1/en
Application granted granted Critical
Publication of FR2697010B1 publication Critical patent/FR2697010B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/37—Phosphates of heavy metals
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing

Abstract

The invention relates to a process for the treatment of soluble thorium compounds, such as especially nitrates and/or chlorides, consisting in first of all reacting the said soluble compounds, in aqueous medium, with a base, such as aqueous ammonia, so as to precipitate thorium hydroxide, then in reacting, still in aqueous medium, the said precipitate with a phosphating agent, such as phosphoric acid or soluble phosphate salts, so as to precipitate thorium phosphate, and finally in separating the precipitate obtained from the reaction medium, especially by filtration. The process according to the invention makes it possible especially to control pollution problems related to industrial storage and/or waste of thorium products by bringing the latter element to a form which is both insoluble and non-leachable. The invention also relates to a new thorium phosphate capable of being obtained by such a process.
FR9212463A 1992-10-19 1992-10-19 Process for the treatment of soluble thorium compounds and new thorium phosphate thus obtained. Expired - Fee Related FR2697010B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR9212463A FR2697010B1 (en) 1992-10-19 1992-10-19 Process for the treatment of soluble thorium compounds and new thorium phosphate thus obtained.
AU48944/93A AU665458B2 (en) 1992-10-19 1993-10-11 Process for the treatment of soluble thorium compounds and new thorium phosphate thus obtained
DE69307259T DE69307259D1 (en) 1992-10-19 1993-10-15 Process for the treatment of soluble compounds of thorium and the manufactured thorium phosphate
AT93402544T ATE147365T1 (en) 1992-10-19 1993-10-15 METHOD FOR TREATING THE SOLUBLE COMPOUNDS OF THORIUM AND THE PRODUCED THORIUM PHOSPHATE
EP93402544A EP0594485B1 (en) 1992-10-19 1993-10-15 Process for the treatment of the soluble compounds of thorium and the obtained thorium phosphate
CA002108600A CA2108600A1 (en) 1992-10-19 1993-10-18 Process for processing soluble thorium compounds and novel thorium phosphate obtained thereby
US08/137,746 US5403565A (en) 1992-10-19 1993-10-19 Thorium phosphates prepared by insolubilization of soluble thorium compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9212463A FR2697010B1 (en) 1992-10-19 1992-10-19 Process for the treatment of soluble thorium compounds and new thorium phosphate thus obtained.

Publications (2)

Publication Number Publication Date
FR2697010A1 FR2697010A1 (en) 1994-04-22
FR2697010B1 true FR2697010B1 (en) 1995-02-24

Family

ID=9434649

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9212463A Expired - Fee Related FR2697010B1 (en) 1992-10-19 1992-10-19 Process for the treatment of soluble thorium compounds and new thorium phosphate thus obtained.

Country Status (7)

Country Link
US (1) US5403565A (en)
EP (1) EP0594485B1 (en)
AT (1) ATE147365T1 (en)
AU (1) AU665458B2 (en)
CA (1) CA2108600A1 (en)
DE (1) DE69307259D1 (en)
FR (1) FR2697010B1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6635796B2 (en) 1990-03-16 2003-10-21 Sevenson Environmental Services, Inc. Reduction of leachability and solubility of radionuclides and radioactive substances in contaminated soils and materials
US5732367A (en) * 1990-03-16 1998-03-24 Sevenson Environmental Services, Inc. Reduction of leachability and solubility of radionuclides and radioactive substances in contaminated soils and materials
FR2732326B1 (en) * 1995-03-29 1997-05-30 Centre Nat Rech Scient NOVEL THORIUM PHOSPHATES, THEIR PREPARATION PROCESS AND THEIR USE FOR STORING RADIOACTIVE PRODUCTS
FR2741339B1 (en) * 1995-11-20 1997-12-12 Commissariat Energie Atomique PROCESS FOR THE MANUFACTURING OF COMPOUNDS OF MONAZITE TYPE DOPED OR NOT WITH ACTINIDES AND APPLICATION TO THE PACKAGING OF RADIOACTIVE WASTE RICH IN ACTINIDES AND LANTHANIDES
FR2835823B1 (en) * 2002-02-13 2004-04-09 Centre Nat Rech Scient PROCESS FOR THE PREPARATION OF A PRODUCT BASED ON THORIUM PHOSPHATE AND / OR ACTINIDES
US8116423B2 (en) 2007-12-26 2012-02-14 Thorium Power, Inc. Nuclear reactor (alternatives), fuel assembly of seed-blanket subassemblies for nuclear reactor (alternatives), and fuel element for fuel assembly
EA015019B1 (en) 2007-12-26 2011-04-29 Ториум Пауэр Инк. Nuclear reactor (variants), fuel assembly consisting of driver-breeding modules for a nuclear reactor (variants) and a fuel cell for a fuel assembly
EP3511945B1 (en) 2008-12-25 2020-09-09 Thorium Power, Inc. A fuel assembly for a light water nuclear reactor
US10170207B2 (en) 2013-05-10 2019-01-01 Thorium Power, Inc. Fuel assembly
US10192644B2 (en) 2010-05-11 2019-01-29 Lightbridge Corporation Fuel assembly
WO2011143172A1 (en) 2010-05-11 2011-11-17 Thorium Power, Inc. Fuel assembly with metal fuel alloy kernel and method of manufacturing thereof
DE102013211938A1 (en) 2013-06-24 2014-12-24 Siemens Aktiengesellschaft Method for introducing radioactive elements into a phosphate-containing crystal structure
DE102013211942A1 (en) 2013-06-24 2014-12-24 Siemens Aktiengesellschaft Method for introducing radioactive elements into a phosphate-containing crystal structure

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351436A (en) * 1964-12-28 1967-11-07 Gen Electric Preparation of thorium pyrophosphate
CH561156A5 (en) * 1970-07-31 1975-04-30 Cnen
US3764553A (en) * 1972-08-18 1973-10-09 Atomic Energy Commission Removal of radioisotopes from waste solutions
US4072605A (en) * 1975-11-28 1978-02-07 Automated Medical Systems, Inc. Method of obtaining a precipitate of metallic ions from solutions containing low concentrations of metal salts
IT1098271B (en) * 1978-08-23 1985-09-07 Montedison Spa NEW INORGONIC PIGMENTS AND PROCESS TO PREPARE THEM
US4321158A (en) * 1980-05-30 1982-03-23 The United States Of America As Represented By The United States Department Of Energy Backfill composition for secondary barriers in nuclear waste repositories
FR2515630B1 (en) * 1981-10-30 1985-10-04 Rhone Poulenc Spec Chim PROCESS FOR EXTRACTING AND SEPARATING URANIUM, THORIUM AND RARE EARTHS BY TREATING AQUEOUS CHLORIDE SOLUTIONS THEREOF
US4528129A (en) * 1982-05-03 1985-07-09 Frank Manchak Processing radioactive wastes and uranium mill tailings for safe ecologically-acceptable disposal
FR2575936B1 (en) * 1985-01-15 1987-02-13 Rhone Poulenc Spec Chim PROCESS FOR THE PURIFICATION OF AQUEOUS SOLUTIONS OF RARE EARTH SALTS BY LIQUID-LIQUID EXTRACTION
JPS63201015A (en) * 1987-02-17 1988-08-19 Mitsubishi Kasei Corp Separation of thorium
FR2623792B1 (en) * 1987-11-27 1991-02-15 Rhone Poulenc Chimie PROCESS FOR SEPARATING THORIUM AND RARE EARTHS FROM A FLUORIDE CONCENTRATE THEREOF
US5200378A (en) * 1988-01-11 1993-04-06 The Texas A&M University System Pillaring of layered compounds
US5045289A (en) * 1989-10-04 1991-09-03 Research Corporation Technologies, Inc. Formation of rare earth carbonates using supercritical carbon dioxide

Also Published As

Publication number Publication date
EP0594485A1 (en) 1994-04-27
US5403565A (en) 1995-04-04
DE69307259D1 (en) 1997-02-20
ATE147365T1 (en) 1997-01-15
FR2697010A1 (en) 1994-04-22
EP0594485B1 (en) 1997-01-08
AU4894493A (en) 1994-05-05
CA2108600A1 (en) 1994-04-20
AU665458B2 (en) 1996-01-04

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ST Notification of lapse